High-stability refrigeration fresh-keeping cabinet

Abstract

This utility model relates to the field of safe technology and discloses a highly stable refrigerated display case, including an outer shell. An energy storage component is disposed inside the outer shell, dividing the interior of the shell into multiple cavities. Multiple movable doors are rotatably installed on the outer wall of the outer shell corresponding to the multiple cavities. A cooling fan is fixedly installed on the top of the outer shell. In this utility model, by setting thin-plate first and second energy storage plates, during off-peak electricity hours or when the cabinet doors are closed for extended periods, priority is given to storing cold energy in the first and second energy storage plates. Once the first and second energy storage plates are full of cold energy, the compressor stops. Thereafter, temperature fluctuations inside the cabinet are entirely balanced by the heat absorption from the melting of inorganic hydrated salts inside the first and second energy storage plates. Even when the power is off, the internal temperature of the display case can still be maintained due to the action of the first and second energy storage plates, even if the compressor is not working for a long time.

Description

Technical Field

[0001] This utility model relates to the field of safe technology, and in particular to a highly stable refrigerated storage cabinet. Background Technology

[0002] In existing technologies, commercial and household refrigerated display cases generally use compressor-based active cooling systems to maintain a low-temperature environment inside the case. When such equipment is running, the compressor needs to start and stop frequently based on feedback from the temperature sensor inside the case to cope with the opening and closing of the case door, changes in ambient temperature, and the heat load introduced by the placement of goods.

[0003] This conventional operating mode has two main drawbacks: First, frequent compressor starts and stops cause significant temperature fluctuations inside the cabinet, making it difficult to achieve precise and stable temperature control. These temperature fluctuations accelerate food spoilage and affect preservation quality. Second, the compressor's starting current is much higher than its normal operating current. Frequent starts and stops not only increase energy consumption but also significantly shorten the compressor's mechanical lifespan. Furthermore, in the event of a power outage, the existing refrigerators maintain a very limited low temperature for a very short time. Therefore, we propose a highly stable refrigerated refrigerator. Utility Model Content

[0004] The present invention aims to solve the technical problems existing in the prior art and provide a highly stable refrigerated display case.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a highly stable refrigerated display case, comprising an outer shell, wherein an energy storage component is disposed inside the outer shell, the energy storage component divides the interior of the outer shell into multiple cavities, multiple movable doors are rotatably installed on the outer wall of the outer shell corresponding to the multiple cavities, a cold air fan is fixedly installed on the top of the outer shell, a first evaporator plate is fixedly installed on the inner wall of each cavity, a first energy storage plate is fixedly installed on the inner wall of the first evaporator plate, the energy storage component includes a mounting frame fixedly installed inside the outer shell, multiple second energy storage plates are fixedly installed at equal intervals inside the mounting frame, the interiors of the first energy storage plates and the second energy storage plates are both hollow, and the interiors of the first energy storage plates and the second energy storage plates are both filled with phase change material, the cross-section of the second energy storage plate is inverted U-shaped, and a second evaporator plate is fixedly installed in the second energy storage plate.

[0006] Preferably, one set of the energy storage components is located on the top inner wall of the housing and is used in conjunction with the air cooler. Furthermore, the energy storage components are equipped with multiple inclined air guide plates fixedly installed between multiple second energy storage plates.

[0007] Preferably, a first capillary cavity is formed inside the first evaporator plate, and a first delivery pipe is fixedly installed on the outer wall of the first evaporator plate and at both ends of the first capillary cavity.

[0008] Preferably, the second evaporator plate has a second capillary cavity inside, and two second conveying pipes that communicate with the inside of the second capillary cavity are fixedly installed inside the mounting frame and at both ends of the second capillary cavity. The second conveying pipes are respectively connected to the first conveying pipes, so that the first capillary cavities inside the multiple first evaporator plates are connected to the second capillary cavities inside the multiple second evaporator plates.

[0009] Preferably, a rubber strip is fixedly installed on the outer wall of the mounting frame near the movable door, and the rubber strip is elastically designed.

[0010] Preferably, a throttling device and a compressor are fixedly installed on the outer wall of the housing, and the compressor, the throttling device, the first capillary cavities opened inside the multiple first evaporator plates, and the second capillary cavities opened inside the multiple second evaporator plates are connected by hoses to form a closed loop.

[0011] Preferably, the first energy storage plate and the first evaporator plate located inside the cavity have U-shaped cross sections, covering the two side walls and the rear wall of the outer shell.

[0012] Beneficial effects

[0013] This invention provides a highly stable refrigerated display case. It has the following beneficial effects:

[0014] (1) The highly stable refrigerator is equipped with a thin-plate first energy storage plate and a second energy storage plate. When the power consumption is low or the cabinet door is closed for a long time, the controller starts the compressor and prioritizes the storage of cold for the first and second energy storage plates. The system continues to work until the phase change material inside the first and second energy storage plates is completely solidified. When the first and second energy storage plates are full of cold energy, the compressor stops. After that, the temperature fluctuation inside the cabinet is balanced by the melting and heat absorption of the inorganic hydrated salt inside the first and second energy storage plates. When the compressor is not working for a long time, the temperature inside the refrigerator can still be maintained under the action of the first and second energy storage plates when the power is cut off.

[0015] (2) In this highly stable refrigerator, the first and second energy storage plates are used alternately with the compressor, which can extend the service life of the compressor. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation of the second energy storage plate structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the outer shell structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the first energy storage plate structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the first capillary cavity structure of this utility model;

[0023] Figure 6 This is a schematic cross-sectional view of the first energy storage plate of this utility model;

[0024] Figure 7 This is a schematic diagram of the energy storage component structure of this utility model;

[0025] Figure 8 This utility model Figure 7 A magnified view of a portion of point A in the middle.

[0026] Legend: 1. Outer shell; 2. Air cooler; 3. Door; 4. Mounting frame; 5. First energy storage plate; 6. First evaporator plate; 7. First delivery pipe; 8. First capillary cavity; 9. Second capillary cavity; 10. Second delivery pipe; 11. Second evaporator plate; 12. Rubber strip; 13. Air guide plate; 14. Second energy storage plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-8As shown, a highly stable refrigerated display case includes an outer shell 1. An energy storage component is disposed inside the outer shell 1, dividing the interior of the outer shell 1 into multiple cavities. Multiple movable doors 3 are rotatably installed on the outer wall of the outer shell 1 corresponding to the multiple cavities. A cooling fan 2 is fixedly installed on the top of the outer shell 1. A first evaporator plate 6 is fixedly installed on the inner wall of each cavity. A first energy storage plate 5 is fixedly installed on the inner wall of the first evaporator plate 6. The energy storage component includes a mounting frame 4 fixedly installed inside the outer shell 1. Multiple second energy storage plates 14 are equidistantly fixedly installed inside the mounting frame 4. The interiors of the first energy storage plates 5 and the second energy storage plates 14 are hollow. The interior of 4 is filled with phase change material. The cross-section of the second energy storage plate 14 is set in an inverted U shape, and the second evaporator plate 11 is fixedly installed in the second energy storage plate 14. The temperature fluctuation inside the outer shell 1 is balanced by the melting and heat absorption of inorganic hydrated salt inside the first energy storage plate 5 and the second energy storage plate 14. When the refrigerator is not working for a long time, the temperature inside the refrigerator can still be maintained under the action of the first energy storage plate 5 and the second energy storage plate 14 when the power is cut off. The first energy storage plate 5 and the second energy storage plate 14 are used alternately with the compressor, which can extend the service life of the compressor. The movable door 3 in this device can be opened separately when taking out items, reducing the circulation of cold air inside the cabinet with the external ambient air.

[0029] like Figure 3 As shown, one set of energy storage components is located on the top inner wall of the outer casing 1 and is used in conjunction with the air cooler 2. The energy storage components are fixedly installed with multiple inclined air guide plates 13 between multiple second energy storage plates 14. The cold air generated by the air cooler 2 will preferentially exchange heat with the multiple second energy storage plates 14 to ensure that the temperature of the air blown into the cabinet is extremely stable and to avoid fluctuations in the air supply temperature.

[0030] like Figure 5 As shown, a first capillary cavity 8 is provided inside the first evaporator plate 6, and a first delivery pipe 7 is fixedly installed on the outer wall of the first evaporator plate 6 and at both ends of the first capillary cavity 8. The first delivery pipe 7 is connected to the inside of the first capillary cavity 8, and the refrigerant is delivered to the inside of the first capillary cavity 8 through the first delivery pipe 7.

[0031] like Figure 8As shown, a second capillary cavity 9 is formed inside the second evaporator plate 11. Two second conveying pipes 10, which communicate with the inside of the second capillary cavity 9, are fixedly installed inside the mounting frame 4 at both ends of the second capillary cavity 9. The second conveying pipes 10 are respectively connected to the first conveying pipes 7, so that the first capillary cavities 8 inside the multiple first evaporator plates 6 are connected to the second capillary cavities 9 inside the multiple second evaporator plates 11. The second conveying pipes 10 and the first conveying pipes 7 are connected by pipes, so that the cavities inside the multiple first evaporator plates 6 and the second evaporator plates 11 are connected, thereby facilitating the unified cooling treatment of the multiple first evaporator plates 6 and the second evaporator plates 11.

[0032] like Figure 7 As shown, a rubber strip 12 is fixedly installed on the outer wall of the mounting frame 4 near the movable door 3. The rubber strip 12 is elastic. The rubber strip 12 can fill the gap between the inner wall of the movable door 3 and the mounting frame 4, thereby enhancing the sealing performance of the refrigerator during use.

[0033] A throttling device and a compressor are fixedly installed on the outer wall of the outer casing 1. The compressor, the throttling device, the first capillary cavity 8 opened inside the multiple first evaporator plates 6 and the second capillary cavity 9 opened inside the multiple second evaporator plates 11 are connected by a hose to form a closed loop. The throttling device and the compressor are both existing technologies, and the throttling device can be a common throttling capillary structure.

[0034] like Figure 4 As shown, the first energy storage plate 5 and the first evaporator plate 6, located inside the cavity, both have a U-shaped cross-section, covering the side and rear walls of the outer shell 1; this achieves maximum cold storage material loading without occupying any effective storage volume. The large contact area with air results in high heat exchange efficiency during cold release.

[0035] The working principle of this utility model is as follows: During use, a cold air blower 2 installed on the top of the outer casing 1 delivers cold air into the interior of the outer casing 1. An energy storage component is also installed on the top of the outer casing 1. The second energy storage plate 14 in the energy storage component is encapsulated with an inorganic hydrated salt phase change material, and the first energy storage plate 5 is also encapsulated with the same phase change material. At night, when the refrigerator is not frequently used, the compressor starts when the compressor and throttling device work in conjunction with the refrigerant in the circuit and the first evaporator plate 6 and the second evaporator plate 11. Low-temperature refrigerant flows into the first evaporator plate 6 and the second evaporator plate 11. In the first capillary cavity 8 and the second capillary cavity 9, the temperature of the entire first evaporator plate 6 and the second evaporator plate 11 drops rapidly. Since the first energy storage plate 5 and the second energy storage plate 14 are in close contact with the first evaporator plate 6 and the second evaporator plate 11 over a large area, and the contact thermal resistance can be reduced by using thermally conductive silicone grease or soldering, the cooling energy is efficiently conducted to the first energy storage plate 5 and the second energy storage plate 14. The temperature of the first energy storage plate 5 and the second energy storage plate 14 drops to their phase change point and begins to solidify, releasing latent heat. This latent heat is carried away by the refrigerant through the same path. The process continues until all phase change materials inside the first energy storage plate 5 and the second energy storage plate 14 are completely solidified, and cold storage is completed. The first energy storage plate 5 and the second energy storage plate 14 have built-in temperature sensors. When the temperature sensors detect that the phase change materials have completely melted, and it is during a low-electricity period or the cabinet door has been closed for a long time, the controller starts the compressor, prioritizing cold storage for the first energy storage plate 5 and the second energy storage plate 14. At this time, the temperature inside the cabinet may already be low, but the system will continue to work until the phase change materials inside the first energy storage plate 5 and the second energy storage plate 14 are completely solidified. After the first energy storage plate 5 and the second energy storage plate 14 are full of cold energy, the compressor stops. After that, the temperature fluctuation inside the cabinet is balanced by the melting and heat absorption of inorganic hydrated salt inside the first energy storage plate 5 and the second energy storage plate 14. If the compressor does not work for a long time, the temperature inside the refrigerator can still be maintained when the power is cut off, thanks to the action of the first energy storage plate 5 and the second energy storage plate 14. The alternating use of the first energy storage plate 5 and the second energy storage plate 14 with the compressor can extend the service life of the compressor. The movable door 3 in this device can be opened separately when taking out items, reducing the circulation of cold air inside the cabinet with the external ambient air.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A highly stable refrigerated display case, comprising an outer shell (1), characterized in that: The shell (1) is provided with an energy storage component inside, which divides the interior of the shell (1) into multiple cavities. The outer wall of the shell (1) is rotatably installed with multiple movable doors (3) corresponding to the multiple cavities. A cold air blower (2) is fixedly installed on the top of the shell (1). A first evaporator plate (6) is fixedly installed on the inner wall of each cavity. A first energy storage plate (5) is fixedly installed on the inner wall of the first evaporator plate (6). The energy storage component includes a mounting frame (4) fixedly installed inside the shell (1). Multiple second energy storage plates (14) are fixedly installed at equal intervals inside the mounting frame (4). The interiors of the first energy storage plate (5) and the second energy storage plate (14) are hollow. The interiors of the first energy storage plate (5) and the second energy storage plate (14) are filled with phase change material. The cross-section of the second energy storage plate (14) is inverted U-shaped. A second evaporator plate (11) is fixedly installed in the second energy storage plate (14).

2. The highly stable refrigerated display case according to claim 1, characterized in that: One of the energy storage components is located on the top inner wall of the outer casing (1) and is used in conjunction with the air cooler (2). The energy storage component is located between multiple second energy storage plates (14) and has multiple inclined air guide plates (13) fixedly installed inside.

3. The highly stable refrigerated display case according to claim 2, characterized in that: The first evaporator plate (6) has a first capillary cavity (8) inside, and the outer wall of the first evaporator plate (6) and the two ends of the first capillary cavity (8) are fixedly installed with first delivery pipes (7).

4. The highly stable refrigerated display case according to claim 3, characterized in that: The second evaporator plate (11) has a second capillary cavity (9) inside. The mounting frame (4) has two second delivery pipes (10) that are connected to the inside of the second capillary cavity (9) at both ends. The second delivery pipes (10) are respectively connected to the first delivery pipe (7), so that the first capillary cavity (8) inside the multiple first evaporator plates (6) is connected to the second capillary cavity (9) inside the multiple second evaporator plates (11).

5. A highly stable refrigerated display case according to claim 4, characterized in that: A rubber strip (12) is fixedly installed on the outer wall of the mounting frame (4) near the movable door (3). The rubber strip (12) is elastically set.

6. A highly stable refrigerated display case according to claim 5, characterized in that: The outer wall of the outer casing (1) is fixedly installed with a throttling device and a compressor. The compressor, the throttling device, the first capillary cavity (8) opened inside the first evaporator plate (6), and the second capillary cavity (9) opened inside the second evaporator plate (11) are connected by a hose to form a closed loop.

7. A highly stable refrigerated display case according to claim 6, characterized in that: The first energy storage plate (5) and the first evaporator plate (6) located inside the cavity are both U-shaped in cross section, covering the two side walls and the rear wall of the outer shell (1).

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